JP4898788B2 - Belay device - Google Patents

Abstract

A belay device for protecting a climber on a rope from a fall has a powered winding reel to which the rope is attached. A control mechanism acts to prevent slack in the rope between the climber and the winding reel and includes load sensor that which, on detecting the weight of the climber on the rope, switches the operation of the device to a fall or descent mode where the winding reel is stopped and the climber is suspended by the rope. An electronic control and diagnostic system monitors the operation of the winding reel and switches its operation to a safe, fault mode when a fault is detected.

Description

  The present invention relates to a safety device for a climber. More specifically, the present invention provides a belay device (Belay (safety safety by rope)) that allows climbers to climb without a partner (belayer) while receiving protection from the situation of falling. About.

  A climber protects himself during the climbing process by attaching himself to a rope attached to the climbing surface. The climber is attached to one end of the rope, while the partner controls the supply of the rope to the climber. In top rope climbing, the rope is supplied from above, but is supplied by a partner located above the climber, or the partner is located on the ground, but the rope is supplied upward to a pulley located at the top of the climb. Then you can either drop it down to the climber below. In either case, the climber is protected from falling by maintaining a tight grip on the rope. Regardless of whether the rope is supported from above the climber in top rope climbing or from below the climber in lead climbing, if the climber falls, ensuring the safety of the climber will `` secure the climber '' "It depends on the partner's concentration and skill.

  This technique is used in both outdoor and indoor climbing.

  Using this technology means, in other words, that a climber must be with a partner in order to perform a climbing sport. This is perceived as an inevitable outdoors. However, since it is difficult to find a partner to climb an indoor wall, an auto belay device for installation in an indoor climbing facility has been developed. The device is typically a spring loaded type that does not require a power connection. Such a device incorporates a load tape instead of a rope, which is wound around the central drum of a spring-loaded inertial reel. The spring action of the reel is constantly trying to retract the tape, and when the tape is unloaded, the tape is completely rewound into the device. When the reel is attached to the top of the climb, the drawn tape is clipped and fixed to the floor at the climb base. The climber approaches the climbing base and unclips the tape from the ring installed on the floor. The climber can start climbing by clipping the carabiner at the end of the tape into the climbing belt. If the climber accidentally removes his hand from the end of the tape, the tape will pop out of the top of the wall. At the time of climbing, the tape is pulled in by the reel spring loading action. When the climber falls, the clutch device in the reel slowly lowers the climber to the ground.

  Existing auto-layout devices generally take this form. These friction plate clutch devices are effective in providing sufficient safety, but generally can only operate when the weight of the climber is in the range of 35-140 kg and are typically limited to a climbing height that can be protected. End up. Typically, the height limit of these devices is 12 meters, but the height of climbing walls provided for sports is even higher, approximately 20 meters or more. Another drawback hidden in existing equipment is that it typically requires frequent maintenance and repairs, such as every 12 months.

  Another type of prior art device uses a pneumatic cylinder to lower the climber to the ground.

  French Patent Application No. 2727026 (BROUTY) proposes the use of an electric winch drum (winding reel) having a control mechanism for controlling tension applied to a climbing rope during climbing by a climber. However, the control mechanism of the disclosed device has several drawbacks. In particular, if the control mechanism is faulty, a dangerous situation can occur where the rope is continuously unwound from the take-up reel. Furthermore, in the control mechanism proposed in French Patent Publication No. 2727026, when the climber falls and when the climbing rope is tensioned for other reasons, for example, the climber skillfully moves on the climbing surface. It is indistinguishable from the situation when you need some “sag” rope to move. None of the existing devices provide the ability to lift the climber off the ground. Such a function can be useful for facilitating climbing wall maintenance, for example, during handhold relocation or replacement. In addition, the auto belay device including the option of the electric lift function is also effective in non-sport activities such as building maintenance and tree surgery that require safe rope climbing.

  An object of the present invention is to provide a belay device for providing a climbing safety system that does not require partner assistance to secure a climber while avoiding at least one of the above-mentioned drawbacks. .

The belay device according to the present invention comprises:
An electric take-up reel,
A climbing rope with one end attached to the take-up reel, and when used, the end portion along the climbing rope is attached to the climber;
A load detection means and a control mechanism including an electronic control diagnosis system,
The control mechanism controls the electric take-up reel in a first climbing mode in which the take-up reel operates so that the rope does not sag between the climber in use of the apparatus and the take-up reel. Formed and arranged as
The load detecting means detects the weight of the climber on the rope, and the take-up reel is stopped, and the operation of the take-up reel is switched to the second fall or descend mode in which the climber is suspended by the rope. Arranged,
The electronic control diagnosis system is formed and arranged to monitor the operation of the electric take-up reel and the control mechanism and switch the operation of the take-up reel to the third defect mode when a defect is detected.

  The take-up reel is preferably powered by an electric motor.

  In the climbing mode, the control mechanism acts to prevent sagging of the rope by instructing the take-up reel to wind the rope when sagging is detected via the electronic control diagnostic system. When the slack is removed, the take-up reel is commanded to stop. When the rope is lightly tensioned, the take-up reel may be commanded to unwind the rope, for example when the climber is controlled to descend. The take-up reel is commanded to stop in the fall or descent mode where the weight of the climber is on the rope. The rope unwinding can then be initiated to lower the climber to the ground in a number of ways as described below. In the defect mode, the take-up reel stops and an alarm is generated.

  The electronically controlled diagnostic system obtains input from the rest of the control mechanism including the sensor. In response to these inputs, the electronic diagnostic system controls the power supply of the take-up reel. Typically, the take-up reel is powered by a three-phase electric motor, and an electronically controlled diagnostic system controls an inverter that controls the motor and thus the take-up reel speed and direction. At the same time, the electronic control diagnostic system performs a diagnostic function. The diagnostic function can operate at multiple levels. For example, outputs from a control system that includes sensors such as microswitches and potentiometers as described below can be compared with each other, and if there is a mismatch in the comparison, a defect mode is initiated. Similarly, the defect mode can be initiated by comparing the signal input to the inverter with the output signal. Also, other sensors that independently detect the movement of the take-up reel may be used and used for input to the diagnostic system, and for the purpose of mutual check, a “surplus” sensor in the control mechanism May be used. The diagnostic function provides additional safety that is essential in the operation of the belay device. Although the risk of malfunction of the control system may be small, the consequences of that danger can be severe, and in some cases, the climber can be seriously injured or even more severely fatal. For example, if the reeling of the take-up reel becomes uncontrollable due to a defect, the climber can be left at a dangerous height without protection. If the belay device of the present invention does not have a suitable self-diagnosis system, it would probably not be granted regulatory approval, such as CE approval for use.

  The electronically controlled diagnostic system is preferably programmable. The inverter used to control the speed and direction of the take-up reel is also preferably programmable. With electronic programmable control systems and inverters, a wide range of functionality can be built within the control system, and the take-up reel speed and direction motion control can be almost infinite. Thus, by simply reprogramming the electronic control diagnostic system, the operation of the belay device of the present invention can be changed in accordance with the climbing conditions and types required as described below.

  It will be readily appreciated by the reader that the term climbing rope includes any type of line suitable to support the weight of the climber in the event of a fall. For example, the climbing rope may be a natural or synthetic fiber rope, webbing tape, or steel wire or rope. Beneficially, the belay device of the present invention can be used with conventional climbing ropes, so that the climbing experience obtained closely simulates climbing with a partner using such ropes. It is.

  In climbing mode, the control mechanism takes up the rope whenever there is slack in the rope, and when the tension is lightly tensioned, that is, when the tension is less than the weight of the climber, the rope Can be configured or programmed to unwind. With this mechanism, the rope is always in place during either the top rope or the lead climbing movement, while the climber gets more rope as needed to move skillfully on the climbing surface. It is held in a stretched state.

  However, in order to add safety, it may be preferable to limit the operation of the take-up reel, especially when used by inexperienced climbers. For example, in top rope climbing, the climbing mode is such that when the rope is slack, after the rope has been wound, it will simply stop when the slack disappears, i.e. when the rope is lightly tensioned. It may just act so that it is not. This method of operation prevents the climber from pulling out many free ropes from the take-up reel. This prevents the climber from being fully protected if it falls.

  For safety reasons, in the embodiment of the present invention in which the take-up reel is operated so that the control mechanism is different in either the top rope or the lead climbing, the belay device secures a key and a keyhole or an electronic code lock, etc. Further means are preferably provided, which prevent operation in a manner inappropriate for the climbing method being attempted (top rope or reed).

  If a length of rope is pulled from the take-up reel and is not taut in the climbing state, it must be rewound onto the take-up reel for subsequent use. In this situation, it has been found that the rope may be loosely wrapped around the drum if the rope is not tensioned when wound. Such loose wrapping can be trapped in the mechanism of the belay device and impair accurate and safe operation. Therefore, the belay apparatus of the present invention may optionally be equipped with a nip roller mechanism that is formed and disposed so as to apply tension between the rope wound around the take-up reel and the take-up reel. The nip roller mechanism operates only when a special rewind mode is selected to avoid interference with the normal operation of the control mechanism depending on the rope tension. The nip roller mechanism also tends to be layered regularly to direct or “track” the rope to the take-up reel.

  When required, for example, when a very long rope, particularly a thin rope such as a steel cable, is used with the belay device of the present invention, control of the layering of the rope to the take-up reel can be controlled. For improvement, a self-tailing mechanism may be provided. Self-tailing devices are well known for winding up long cables or ropes. For example, the self-tailing device may comprise a guide that tensions the rope, which guide moves the width of the take-up reel back and forth when the rope is wound, and the rope when wound around the reel. Orient the placement and wrapping.

  The operation of the belay device of the present invention ensures a tight line state. In top rope climbing, the control mechanism switches on the take-up reel motor to wind the rope whenever there is slack, i.e., when there is no tension. This fully simulates a situation where a climber gets a partner that keeps the rope taut so that it does not fall freely over long distances before it falls under belay control. It is In the event of a fall, the control mechanism of the present invention is switched to the drop mode and operates to stop the operation of the take-up reel.

  When the take-up reel is driven by a motor that acts directly through the gearbox, depending on the ratio of motor and gearbox used in the drive train, the fallen climber will move from the belay line near the drop point. Suspended or weight is sufficient to turn the take-up reel, gearbox, and motor while gradually lowering the climber to the ground. It is preferable to select a drive train that holds the climber at an appropriate location near the fall point of the climber. The fallen climber can then re-stick to the climbing surface to continue climbing or be lowered to the ground with a take-up reel operating under power as described below by a remote control. A descending sequence can also be activated. It can be readily appreciated that the rope should not be unwound from the reel when the climber climbs the climbing surface, or stands stationary or clings to the climbing surface. This leads to a situation where the rope is slack and the climber is not properly protected if it falls. Thus, in normal use, the control mechanism can be lowered only when the weight of the climber is tensioning the line.

  Beneficially, the control mechanism of the present invention automatically causes a descending sequence to safely descend the climber to the ground when the adjustable weight period has elapsed when the climber's weight is tensioning the rope. And a timer mechanism that is operated.

  This automatic lowering of the climber tensioning the rope by weight after a certain period of time is particularly useful when children and beginners are learning to climb. Children and beginners do not need to operate the remote control to descend after the time to try climbing. If you want to stick to the climbing surface again, you can do it without safety because the descent speed is slow and controlled. The descending sequence ends immediately and the weight of the climber is no longer applied to the rope, after which the control mechanism operates normally to keep the rope taut. If necessary, the time period can be set to zero so that the climb begins when the weight of the climber tensions the rope.

  The belay device of the present invention initiates the operation of the belay device in the first mode and sends a signal to the control mechanism to unwind the rope to descend when in the second mode. It is preferable to include. The remote control device is preferably a wireless remote control. Dual remote controls, which may be wireless or wired, may be provided as needed to assist in operating the system during an emergency, for example. The remote control can be conveniently attached to the equipment or clothing of the climber and carried by the climber. This eliminates the need for partners or assistance at any stage of climbing. The remote control is programmable so that the climber can stop while descending. This function allows the climber to stick again at the selected point of the wall to resume climbing. This function is also useful in industrial situations where positioning at precise structural points is required.

  In some situations, for example, during maintenance of an artificial climbing surface, it will be beneficial if the take-up reel is operable to act as a lifting device to raise the person engaged in the maintenance work. Will be done. In such a situation, the normal “fail-safe” operation of the take-up reel can be overridden by the belay device of the present invention, for example, by invalidating the key or key code into the remote control device. Access to an optional lifting mode of the control mechanism that can be rolled up under (tension) conditions. Also, the use of the belay device of the present invention as a lifting device can be beneficial in many industrial fields. When properly powered to the take-up reel (with sufficient torque), the belay device of the present invention can also be used to lift its own weight, such as building materials, while another device uses materials Used to support the climbers that are going to do. Similarly, a climber can be lifted directly into place as needed by using the apparatus of the present invention. For safety reasons, it is preferred that two ropes are used when the climber is being lifted. If two ropes are used, the take-up reel of the belay device is preferably divided into two take-up sections. Each winding section can then be loaded with another rope. By this means both ropes are operated together by a single belay device. In another form, two devices of the present invention can be used, each device having a rope connected to the climber being lifted. If two devices are used, they can be provided at each corner position on the surface of the building. This lifts the “climber” to any position in the height and width of the building surface by controlling the amount of rope wound on each of the two spaced take-up reels. Has the advantage of being able to.

  When used in a private climbing facility, a remote control system may be provided with a timer mechanism that allows the use of a belay device to be purchased on a “time basis”.

  When used for top rope climbing, the belay device can be placed on the climbing top with the rope suspended, but it may be more convenient to place it on the ground. The take-up reel is then used for top rope climbing by running the rope up onto a pulley installed at the top of the climb. When the take-up reel is arranged at the base of climbing, maintenance access becomes easy, and the belay device of the present invention can also be used for lead climbing. In some situations, for example, if a belay device is used to provide safety to a climber working outside the building, the belay device is mounted so that it can move along a truck or runway. May be. This mechanism can also be used in sport climbing facilities where the belay device can be located on a track that extends along the upper edge of the climbing wall when used in top rope climbing. The belay device can then be moved as needed to the selected climbing route on the wall. When a belay device is attached to a truck or runway, it can be easily moved on wheels running on rails, for example, along a predetermined route along the upper edge of a building. Thereby, when a belay apparatus is used, it is possible to access any part of the surface of the building. The movement of the device along the track may be remotely controlled as needed. In some cases, if the climber is required to move along a predetermined course with varying heights, the belay device moves along the track and winds a rope along the requested course. Programmable to take up or unwind. For other applications, such as tree surgery and jump job, it may be convenient to attach the belay device of the present invention to a truck or other moving vehicle.

  When used for lead climbing, the rope is kept taut and unwound only when the climber climbs and when the rope is tensioned. When the climber falls, the control mechanism switches the take-up reel to fall or descend mode, after which the climber is immediately suspended by the rope from the highest safety means used, and then similar to that of top rope climbing Thus, it can be lowered to the ground at a predetermined (safe) speed. In lead climbing, it is particularly important that the control of the rope tension and the winding and unwinding of the reel movement are carefully controlled. Unlike top rope climbing, the control mechanism allows a portion of the rope to be lifted to attach to the next anchor point (temporary or permanent ring bolt or quick draw) when the climber is climbing In order for the climber to be able to pull the rope from the take-up reel. This process of “drawing” a length of rope must be done quickly at approximately twice the normal operating speed of the device. However, the process of drawing out the rope must not trigger the override switch mechanism, otherwise the rope may be unwound further or the take-up reel operation may stop. Similarly, once the rope is clipped to the next anchor point, the device must act to unwind the excess rope so that it returns to the desired situation of the taut rope. Tests have shown that fine control is required for optimal safety and operation when lead climbing is achieved with the electronic control system described above.

  The control mechanism is configured such that when the belay device is used, the electric take-up reel is in the first position when the rope is not in tension and in the second position when the rope is in tension. A pivot formed and arranged to move around the pivot and a power supply of the take-up reel to control the power supply between the first and second positions when the belay device is used. At least one switch operable when the reel moves, and when the belay device is used, the rope is in tension substantially equal to or exceeding the weight of the climber to which the rope is attached. And an override switch mechanism formed and arranged so that the take-up reel can unwind the rope.

  The pivot preferably rotates the electric take-up reel about a horizontal axis. Although the pivot is not the balance point of the reel and the motor related to the reel, it is desirable that the pivot be provided at a position in the vicinity thereof. The take-up reel is then typically placed at one end on the base support (or ground) and tilted from the horizontal direction. When tension is applied to the rope, the reel tilts from the first position to the second position, and when the rope sags, it returns to the first position under gravity.

  It should be appreciated that other embodiments of the control mechanism of the present invention are also contemplated. For example, when the rope is under tension, the pivot rotates the reel around the vertical axis. In such a case, the reel is returned to the first position of the reel by the action of an elastic biasing member such as a spring when the rope is not tensioned.

  The switch or switches for controlling the operation of the reel may be a micro switch provided at the position of a contact point between one end of the reel and the base support or the ground. When the reel tilts, the microswitch operates from the reel that contacts the ground or support when under pressure. Another switch, such as a tilt switch, can also be considered for use in the control mechanism.

  In the case of top rope climbing, the switch action acts to wind up an untensioned rope and the reel is in the first position. When the rope is tensioned and the reel moves to the second position, the one or more switches operate to stop the reel. It is desirable that the amount of movement of the reel around the pivot is small in order to smooth the operation and continuously take in the rope when the climber climbs and stop almost immediately when the climber pauses. Typically, the movement can be as small as 5 mm.

  In the case of lead climbing, the switch action controls different actions. The rope unwinds when light tension is applied and stops when there is slack or under tension substantially equal to or exceeding the weight of the climber.

  The override switch mechanism operates when the weight of the climber is applied to the rope, that is, when the belay device is switched to the fall or descend mode. In this situation, it may be desirable or required to lower the climber to the ground. The override switch mechanism initiates a descent by making an input to the electronic control diagnostic system, for example, as described above, when permitted by the timer mechanism or when commanded by a remote control device possessed by the climber Can do.

  The override switch mechanism may include biasing means that do not operate a switch, such as a microswitch, until the rope receives at least the weight of the climber and tension displaces the take-up reel from the biased position to operate the switch. . For example, the biasing means may include a compression spring or a counterweight.

  For example, another override switch mechanism may be envisaged in which the electronic load cell or strain gauge measures the load being applied to the take-up reel and rope assembly and then can trigger the release of the reel to unwind the rope. If an electric motor is used to power the take-up reel, electronic monitoring of the motor load can be used.

  Preferably, the control mechanism further includes a remote control device for switching on the power of the take-up reel, for example, to invalidate the normal operation of the control mechanism when required for maintenance as described above. .

  The control mechanism includes a lever operable at the time of use by the rope, and includes a biasing means, and the lever and the biasing means are biased when the lever is not under tension when the belay device is used. Held in a first position by means, arranged and arranged to move to a second position when the rope is under tension, and when the lever moves between the first and second positions At least one switch for controlling the power supply of the take-up reel, wherein the rope is under tension substantially equal to or exceeding the weight of the climber to which the rope is attached. Preferably, an override switch mechanism is provided that can be actuated to unwind the take-up reel until tension is reduced when the apparatus is used.

  The one or more switches that operate when the lever moves may be, for example, a microswitch that operates upon contact with the lever. Instead of using a microswitch, a potentiometer may be used. The potentiometer may be mounted on the take-up drum bearing and in response to the movement of the lever, provides continuous feedback regarding the position and / or movement of the lever to the programmable electronic control system. This mechanism reduces the number of moving parts while increasing the sensitivity to the movement of the lever arm.

  The biasing means can be, for example, one or more weights that act to keep the lever in the first position. Beneficially, the sensitivity of the control mechanism can be adjusted for different situations by changing the number or size of weights installed. During testing of the belay device of the present invention in which a lever mechanism is used, the optimum weight required for different climbing situations varies significantly, especially depending on the friction imposed on the rope on the climbing surface and through the intermediate anchor point. It is known that it can be (1-9 kg depending on the equipment used).

  Beneficially, as an alternative to the weight, the biasing means may comprise a motorized actuator that acts to apply a variable load to the lever, for example, tensioning a biasing member such as a spring. The advantage of such a mechanism is that it can be easily adjusted to apply an optimum load to the lever for a given situation. When the climber is preparing to climb a wall or obstacle, the controller may be operated, for example, by turning a dial, in order to gradually increase the load imposed on the lever by the actuator and biasing member. When the take-up reel operates and the rope begins to move upward, the load on the lever is set to compensate for the friction on the rope. When the electric actuator and biasing member are used to apply a variable load (resistance) to the lever, it is particularly preferred to use a potentiometer to determine the action of the lever, as described above. An electronically controlled diagnostic system can be used to control the actuator to gradually provide resistance to the lever through the biasing member.

  As an alternative to the mechanism in which the motor drives the take-up reel directly via the gearbox, a clutch mechanism can be inserted into the drive chain. For example, the motor may always drive the shaft to which the take-up reel is attached via the gearbox only when the clutch mechanism is actuated to grip the driven shaft, for example, an electromagnetic clutch. In such a mechanism, for example, a control mechanism including a lever and a biasing unit as described above can be used to control the operation of the clutch.

  Such a mechanism can be used in top rope climbing or lead climbing.

  In top rope climbing, when the rope is not tensioned, the clutch is actuated by the control mechanism and the take-up reel is driven to wind the rope. When the rope is under tension, the clutch is released from the driven shaft and the take-up reel stops.

  In lead climbing, when the rope is under tension (not enough to operate the override switch mechanism), the clutch engages the driven shaft to extend the rope. When the rope is not tensioned, the clutch is released from the driven shaft and winding is stopped.

  The take-up reel is not directly attached to the gearbox and motor in this case, so there is no restriction on rotating and immediately unwinding the rope when the weight of the climber tensions the rope. Therefore, when the override switch of the control mechanism operates to prevent uncontrolled descent, the clutch repeatedly and rapidly engages and disengages the driven shaft as a result of the weight of the climber on the rope. Be ordered to do so. This is because the take-up reel rotates due to the weight of the climber and the brake is applied by intermittently engaging the driven shaft via the clutch, so that the climber is gradually lowered to the ground. Have.

  This mechanism has certain benefits. Two or more take-up reels can be operated from a single motor. For example, the motor always drives a shaft along which several take-up reels can be mounted at intervals along the top of an indoor climbing wall in the case of top rope climbing. Each take-up reel engages with the driven shaft through a clutch controlled by the control mechanism as described above as necessary. As a result, several climbers can climb without having to provide separate motors. Furthermore, when the weight of the climber applies tension to the rope, it automatically descends, and no command from the remote control device is required.

  Further preferred features and advantages of the present invention will become apparent from the following detailed description of several embodiments, illustrated with reference to the accompanying drawings.

  In the drawings, similar features are denoted by the same reference numerals.

  FIG. 1 shows one embodiment of the belay device of the present invention. The belay device 1 includes an electric motor 2 that drives the central shaft 4 of the take-up reel 6 via a gear box 8. A climbing rope 9 is attached to the take-up reel 6 (only a few turns of rope 9 are shown in FIG. 1 for clarity).

  The take-up reel, electric motor, and gearbox are mounted on a cradle 10 having a base plate 12. The base plate 12 is mounted on a horizontal pivot 14. Since the pivot 14 is located in the vicinity of the device, not at the equilibrium point 16, the cradle 10 is placed under gravity so that it can be placed on the support 18 when there is no load applied via the climbing rope 9. Incline at. When tension is applied to the rope 9, the cradle 10 tilts so as to be placed on the second support 19.

  In the illustrated example, the belay device 1 is installed at the top of the climb and is used for top rope climbing, and the climbing rope 9 is supplied downward through the slot 20 of the base plate 12.

  The control box 21 includes an electronic control diagnosis system 22 and an inverter 23, and controls the operation of the electric motor 2. When the belay 1 is in use, when the rope 9 is not in tension (ie, is slack), the cradle is placed on the support 18 and the position on the base plate 12 between the base plate 12 and the support 18. The microswitch 24 provided in the is operated by contact. The micro switch 24 sends a signal to the electronic control diagnosis system 22 so that the inverter 23 powers the motor 2 so that the take-up reel 6 operates to take up the rope 9. When the rope 9 is in tension, i.e. all the slack has been removed, the belay device 1 tilts around the pivot 14 until it rests on the second support 19. The second microswitch 28 is operated by bringing the base plate 12 into contact with the second support 19 and signals the electronic control diagnostic system 22 to stop the motor 2.

  An override switch mechanism 30 including a compression spring and a third micro switch is provided at a position on the second support body 19.

  When the tension of the rope 9 is released (when the climber climbs to a higher place), the belay device is configured such that when the operation of the first microswitch 24 starts the winding operation again, the first support 18 Pivot under the influence of gravity so that it rests on top again.

  When the rope 9 is tensioned and released by the action of the climber, the inclination of the device around the pivot 14 is such that the operation of the take-up reel 6 keeps the rope 9 taut while climbing. Used to control.

  In the event of a fall, the rope 9 is tensioned by the weight of the climber, so that the belay 1 is placed on the second support 19 that operates the second microswitch 28. It tilts around the pivot 14 and the motor 2 stops (no power supply). The gear ratio of the gearbox 8 is selected to hold the climber in place while being suspended by the rope. The tension on the rope 9 caused by the weight of the climber compresses the spring so that the third microswitch of the override switch mechanism 30 can be operated. When the override switch mechanism operates, lowering is permitted. If the fallen climber wants to descend, a wireless remote control device (not shown) can be used to send a signal to the electronic control diagnostic system 22 and initiate the rewinding of the rope 9 by the take-up reel 6.

  Similarly, if the climber who has finished climbing descends, release the hand from the climbing surface, apply the weight of the climber to the rope 9, operate the override switch mechanism 30, and then use the remote control device to wind the rope. It is only necessary to start dispensing.

  FIG. 2a shows a schematic diagram of the use of the belay device 1 of FIG. 1 in top rope climbing. The belay device 1 is installed on top of the climbing surface 32. The climber 34 climbs the climbing surface while the rope 9 connected to the belay device 1 is attached. As described above with reference to FIG. 1, the rope 9 is wound by being controlled by the belay device, so that the tensioned state is maintained. The climber 34 starts the operation of the belay device 1 at the start of climbing, the weight of the climber is applied to the rope, and when the override switch mechanism is operated, the wireless remote used to start descending (unwinding the rope). A control device 38 is possessed.

  FIG. 2 b shows another arrangement for top rope climbing when the belay device 1 is installed at the bottom of the climbing surface 32. The rope 9 is turned from below to a pulley 40 installed on the upper part of the climbing surface, and extends downward to the climber 34.

  In FIG. 2c, lead climbing is illustrated. A climber 34 climbs the climbing surface 32 while periodically fixing the rope 9 to a carbiner 42 firmly fixed to the climbing surface. In this case, the control mechanism of the belay device 1 unwinds the rope 9 when tension is applied, that is, when it is pulled by the climber, which means that the tension is substantially the same as or equal to the weight of the climber. Except when exceeding. In that case, the drop or descend mode is engaged with the operation of the override switch, and the take-up reel of the belay device 1 is stopped. The climber can then initiate the descent, if necessary, by unwinding the rope 9 and using the remote control 38 to safely lower the climber to the ground.

  FIG. 3 shows a further embodiment of a belay device according to the invention, in which the take-up reel, gearbox and motor assembly are not pivoted together to control the take-up reel operation. Use the lever movement. The take-up reel 6 is attached to the support cradle 10 by bearings 44 at both ends of the driven shaft 4. For clarity, the motor and gearbox that drives the take-up reel shaft 4 are not shown, and the rope is shown only in the end view (FIG. 3a), which shows the take-up reel. Not.

  Two "L" shaped arms 46 are attached to the support cradle 10 at both ends of the take-up reel by pivots 48 so that these arms are shown in a first position (shown in solid lines in the end view of FIG. 3a). ) To a second position (shown in phantom in the end view of FIG. 3a) about the same axis parallel to the take-up reel shaft 4.

  Each of the arms 46 has a substantially vertical portion 50 and a substantially horizontal portion 52 each having an “L” shape. The arms 46 are connected to each other by horizontally positioned rollers 54 attached at each end to the upper end of a substantially vertical portion 50 of the L-shaped arm 46 to form a control lever 56. The length of the vertical portion is sufficiently long so that the roller 54 does not contact the take-up reel and the climbing rope 9 wound around the take-up reel even when the rope 9 is all taken up. Is.

  The generally horizontal portion 52 of the “L” -shaped arm 46 is a weight that acts to bias the control lever assembly 56 about the pivot 48 to a first position, and in the first position, the vertical portion 50. One operates in contact with the first microswitch 58.

  The climbing rope 9 is wound around the take-up reel 6, guided upward around the roller 54 of the control lever assembly, and then advances around the fixed roller 60 to the climber (not shown in the figure). It is guided. The fixed roller 60 is attached to the support cradle 10 and, when in the first position, rotates on a horizontal axis that is parallel to the roller 54 of the control lever 56 but displaced in the horizontal direction. The horizontal displacement of the fixed roller 60 is in a direction opposite to the direction of bias to the control lever 56 caused by the horizontal portion (weight) of the L-shaped arm.

  When used in top rope climbing, when the rope 9 is not tensioned, the control lever assembly is maintained biased to the first position, the microswitch 58 is activated, and the motor and gearbox are activated. Then, a signal is transmitted to the electronic control diagnosis system 22 so that the take-up reel 6 takes up the rope 9 (removes slack). When the rope 9 is in tension, the portion of the rope 9 between the fixed roller 60 and the take-up reel acts to pull the control lever assembly to the second position, in this second position, The second microswitch 62 is operated by contacting one vertical portion 50 of the “L” -shaped arm 46 and causes the electronic control diagnostic system 22 to stop the motor and take-up reel 6.

  When the tension of the rope 9 is released (when the climber climbs to a higher position), the control lever 56 returns to the first position under the influence of the horizontal portion (weight) 52 of the L-shaped arm 46. When the rope 9 is tensioned and released by the climber's action, the movement of the control lever 56 between the first and second positions is used to properly pinch the rope 9 during top rope climbing. In order to maintain the tension, the operation of the take-up reel 6 is controlled.

  An override switch mechanism 64 is provided that operates when the line is under tension equal to or exceeding the weight of the climber, and in this example it is signaled to control box 22 to engage the lowering mode. A sensor for measuring the load applied to the take-up reel. In descending mode, if the climber is held in place (the take-up reel is stopped) and wants to descend, wireless remote control is used to signal the control box to operate the motor and bring the climber to the ground. The rope can be unwound while being lowered.

  In lead climbing, the operation of the take-up reel 6 in response to the position of the control lever 56 is reversed, that is, the electronic control diagnostic system 22 is programmed to respond differently to the microswitch signal. The take-up reel 6 feeds the line when tension is applied (when the lever is in the second position), that is, when the climber climbs and the rope is pulled. The take-up reel stops when no tension is applied to the rope 9 (when the lever is in the first position).

  In the case of lead climbing using this embodiment, the override switch 64 stops the take-up reel 6 when a tension equal to or exceeding the weight of the climber is applied. Thus, the climber can continue climbing after the fall without losing the height generated by unwinding the rope immediately after the fall.

  FIG. 4 shows one embodiment of the belay device 1 of the present invention for mounting on top of a climbing surface for use in top rope climbing. In normal use, the motor 2 always drives the shaft 4 attached to a suitable bearing 66. Three take-up reels 6 with associated climbing ropes 9 are mounted on the shaft 4, and each can be engaged separately with the shaft 4 by operation of an electromagnetic clutch 68. The electromagnetic clutch 68 is controlled separately by a lever control mechanism 56 (only one shown for clarity) of the same general form as that of the embodiment of FIG. The lever control mechanism 56 responds to tension each of the ropes 9 by sending a signal to the electronic control diagnostic system 22 which engages or disengages the take-up reel 6 from the driven shaft. The electromagnetic clutch 68 is operated.

  In use, each take-up reel 6 is attached to the shaft 4 via a clutch 68 so that the rope is taken up by the take-up reel 6 when no tension is applied to the respective rope 9. When the rope is in tension, the control lever 56 moves and sends a signal to the electronic diagnostic system 22 that releases the clutch 68 and stops winding. If the tension is equal to or exceeds the weight of the climber, a sensor that detects the load on the take-up reel (override switch mechanism 64) signals the electronic control diagnostic system 22 to engage the lowering mode. In this mode, the electromagnetic clutch 68 quickly engages and releases the take-up reel 6 with the driven shaft 4. The take-up reel 6 unwinds the rope 9 due to the weight of the climber on the rope, but the lowering speed is a safe speed due to the braking action when the clutch 68 intermittently engages the take-up reel 6 with the shaft 4. Will be slowed down.

  FIG. 5 shows another embodiment of the belay device of the present invention generally similar to that of FIG. 3, but the control lever 56 is not obscured as a means for biasing to the first position. , Except that another means is used to detect the movement of the lever 56. In this example, the lever 56 is biased to a first position by a spring 70 as a biasing member that operates around the pulley 72. The tension exerted by the spring 70 can be adjusted by a motorized actuator 74, which is controlled by an electronic control diagnostic system 22 (not shown, see FIG. 3b). In this case, instead of a microswitch, the position and movement of the lever 56 is detected by a potentiometer 76 mounted on the bearing of the take-up reel 6 to control the operation of the take-up reel and the actuator 74. A signal is sent to the electronic control diagnostic system 22 (see FIG. 3b). In use, the potentiometer 76 is more sensitive than a mechanism using a microswitch, and the lever arm monitoring sensitivity is higher.

  FIG. 6 shows one embodiment similar to that of FIG. 3, showing a nip roller 76 mounted on a pivot 78 and movable by a motorized actuator 80. The nip roller 76 can be moved by the actuator 80 about an arc indicated by the curved arrow A. When the belay device 1 is in a normal use state during climbing, the nip roller 76 is spaced from the fixed roller 60 so as not to interfere with the safe operation of the control lever 56. If a length of rope 9 that is not tensioned because it is attached to a climber needs to be rewound onto a take-up reel (not shown in the figure, see FIG. 3b), The device 1 enters the rewind mode, in which the actuator 80 moves the nip roller 76 near the fixed roller 60 to grip the rope at point X. This has the effect of tensioning the rope because it is wound around the take-up reel so that a loose loop of rope is not formed on the take-up reel.

  FIG. 7 a shows two belay devices 1, 1 a of the present invention provided at both ends of the upper edge of the building wall 82. A climber 34 is attached to each of the belay devices 1 and 1a by ropes 9 and 9a. By using a wireless remote control (not shown), the climber 34 can be lifted by operation of the belay device 1, 1a. By manipulating different amounts of each rope 9, 9 a to be wound up by the belay device 1, 1 a, the climber is lifted up and down and crosses the surface of the wall 82.

  FIG. 7 b shows the belay device 1 mounted on a rail 84 along the upper edge of the building wall 82. The climber 34 is attached to the belay apparatus 1 having a take-up reel partitioned by two ropes 9 and 9a. The second rope provides additional safety. In use, the climber can operate the take-up reel of the belay device 1 to raise and lower itself and move the belay device 1 along the rail 84 by an electric motor. Thus, the climber 34 can reach any part of the wall 82 to perform maintenance work.

  Various modifications may be made to the above-described embodiments without departing from the scope of the present invention.

1 shows one embodiment of a belay device of the present invention arranged for top rope climbing. 1 schematically shows the use of a belay device of the present invention in top rope and lead climbing. 1 schematically shows the use of a belay device of the present invention in top rope and lead climbing. 1 schematically shows the use of a belay device of the present invention in top rope and lead climbing. 4 shows another embodiment of a belay device according to the present invention having another control mechanism. Fig. 4 shows one embodiment of a belay device of the present invention in which three take-up reels are driven from a single motor engaged by a clutch mechanism. Fig. 4 shows yet another embodiment of a belay device. Fig. 5 shows a further embodiment of a belay device equipped with a nip roller mechanism. It schematically shows the use of the belay device of the present invention to provide access to a building surface. It schematically shows the use of the belay device of the present invention to provide access to a building surface.

Claims (25)

An electric take-up reel (6);
A climbing rope (9) having one end attached to the take-up reel (6) and, in use, an end portion along the climbing rope (9) attached to the climber (34);
A belay device (1) comprising a load detection means (30) and a control mechanism having an electronic control diagnosis system (22),
The control mechanism is
Between the winding reel and the Kuraima in using this said belay device (1) (34) (6), the rope (9) so as not slacken, the detection of the tension of the rope, the winding In the first climbing mode in which the take-up reel (6) is operated by the control mechanism ,
Formed and arranged to control the electric take-up reel (6),
The load detection means (30) is formed and arranged to detect the weight of the climber (34) applied to the rope (9) ,
When detecting the weight of the climber (34) on the rope (9), the control mechanism
Said winding reel (6) is stopped, the second falling or descending mode the Kuraima is suspended by the rope,
Can be operated to switch the operation of the take-up reel (6),
The electronic control diagnostic system (22)
Formed and arranged to receive input from one or more sensors operable to monitor the operation of the electric take-up reel (6 ) and the output of the control mechanism ;
The electronic control diagnostic system (22)
When a mismatch between the operation of the electric take-up reel (6) and / or the output of the control mechanism is detected from the input to the electronic control diagnostic system (22) from the one or more sensors ,
It said winding reel (6) is operable to switch the operation of the winding reel to a third defect mode in which the stop (6), belay device.   The take-up reel (6) is powered by a three-phase electric motor (2) and the electronic control diagnostic system (22) controls an inverter (23) that controls the speed and direction of the electric motor. The belay device (1) according to claim 1.   The electronic control diagnostic system (22) monitors any one of outputs from the control system, outputs from sensors (24, 28), and inputs and outputs from an inverter (23). 3. The belay device (1) according to 2.   The belay device (1) according to any one of claims 1 to 3, wherein the electronic control diagnostic system (22) is programmable.   In the climbing mode, the take-up reel (6) winds the rope (9) when the rope is slack, and winds the rope when the tension is smaller than the weight of the climber (34). The belay device (1) according to any one of claims 1 to 4, which is put out.   In the climbing mode, the take-up reel (6) winds the rope (9) when there is slack in the rope, and does not unwind the rope when tension less than the weight of the climber (34) is applied. The belay device (1) according to any one of claims 1 to 5.   The belay device (1) according to any one of the preceding claims, wherein the control mechanism further comprises safety ensuring means for preventing operation of a method inappropriate for the attempted climbing method.   A nip roller mechanism (76, 78, 80) formed and arranged to apply tension between the rope (9) wound around the take-up reel (6) and the take-up reel is provided. Item 9. The belay device (1) according to any one of items 1 to 7.   The belay device (1) according to any one of the preceding claims, wherein a self-tailing mechanism is provided to control the layering of the rope (9) to the take-up reel (6).   10. A drive train (2, 8) formed and arranged to hold a fallen climber in place near the point where the climber dropped when using the belay device. The belay device (1) according to one item.   When an adjustable time period has elapsed, when the weight of the climber is tensioning the rope (9), it automatically activates a lowering sequence to safely lower the climber (34) to the ground. The belay device (1) according to any one of claims 1 to 10, further comprising a timer mechanism.   Formed and arranged to signal the control mechanism to start the operation of the belay device in the first mode and unwind the rope (9) to descend when in the second mode The belay device (1) according to any one of claims 1 to 11, further comprising a remote control device.   The belay device (1) according to any one of claims 1 to 12, further comprising a pulley (40) that is installed at the top of the climb and in which the rope (9) travels around in the case of top rope climbing. .   14. A belay device (1) according to any one of the preceding claims, formed and arranged to operate as a lifting device.   15. A belay device (1) according to any one of the preceding claims, wherein when in use it is configured and arranged to be mountable on a track (84) or runway and can be moved along the track or runway. 1).   When the control mechanism is in use of the belay device, the electric take-up reel (6) is in the first position when the rope is not tensioned, and when the rope is tensioned. A pivot (14) formed and arranged to move around the pivot to a second position, and controlling the power supply of the take-up reel, and when using the belay device, the first and second At least one switch (24, 28) operable when the electric take-up reel moves between positions, and when using the belay device, the rope (9) is a climber with the rope attached thereto. (34) is operated when in tension substantially equal to or exceeding the weight of (34), and is formed and arranged so that the take-up reel can unwind the rope. Over and a ride switch mechanism (30), belay device according to any one of claims 1 to 15 (1).   The belay device (1) according to claim 16, wherein the pivot rotates the electric take-up reel about a horizontal axis.   The pivot rotates the reel about a vertical axis when the rope is tensioned, and the take-up reel acts by the action of an elastic biasing member when the rope is not tensioned. 17. The belay device (1) according to claim 16, returned to the first position.   The at least one switch for controlling the operation of the take-up reel is a micro switch (24, 28) provided at a contact point between one end of the reel and the base support (12) or the ground. The belay device (1) according to any one of claims 16 to 18, wherein The control mechanism is
A lever (56) operable by the rope (9) in use, and a biasing means (52, 70, 72, 74);
At least one switch (58, 62) for controlling the power supply of the take-up reel (6);
An override switch mechanism (64),
The lever and the biasing means are held in the first position by the biasing means when the lever is not in tension when the belay device is used, and the rope is in tension. Sometimes formed and arranged to move to the second position,
The at least one switch is operated when the lever moves between the first and second positions;
The override switch mechanism is activated when the rope is under tension substantially equal to or exceeding the weight of the climber (34) to which the rope is attached, and tension is reduced when the belay device is in use. The belay device (1) according to any one of claims 1 to 15, wherein the take-up reel can be unwound.   21. The belay device (1) according to claim 20, wherein the at least one switch (58, 62) is a microswitch that operates when contacted by the lever (56).   21. A belay device (1) according to claim 20, wherein the at least one switch is a potentiometer (76) responsive to movement of the lever (56) to provide continuous feedback.   23. A belay device according to any one of claims 20 to 22, wherein the biasing means is one or more weights (52) that act to keep the lever (56) in the first position. 1).   A gearbox that always drives the shaft (4) to which the take-up reel (6) is attached only when the take-up reel is in use and the clutch mechanism (68) is actuated to grip the driven shaft. 24. A belay device (1) according to any one of claims 1 to 14 and 20 to 23, which is powered by a motor (2) through a motor.   A gear that always drives the shaft (4) to which each take-up reel is attached only when the plurality of take-up reels (6) are in use and the clutch mechanism (68) is actuated to grip the driven shaft. 24. The belay device (1) according to any one of claims 1 to 14 and 20 to 23, powered by a motor (2) via a box.

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